Example for the calculation of the storage

An average well insulated one-family house of 150m² has a heating load of about 10 kW. According to the rule of thumb, that makes a storage volume of:

10kW heating load * 0,9m³ = 9m³

That makes a storage base area of: 9m³ : 2,5m (ceiling height)= 3,6m²

According to this, the need of storage room is about 1,8m * 2m. Since only 2/3 of the available space can be used for storage, the storage volume actually adds up to

(3,6m²* 2,5m) * 2/3= 6m³

This matches an amount of 4000kg (1m³= 650kg) of Pellets.